Film for cards or passports, inlet sheets, cards and passports

JP2026093842APending Publication Date: 2026-06-09MITSUBISHI CHEM CORP

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
MITSUBISHI CHEM CORP
Filing Date
2024-11-28
Publication Date
2026-06-09

AI Technical Summary

Benefits of technology

【0010】 本発明によれば、ICチップなどのインレットにおいて、薄くて比較的少ない充填材の添加量であっても、隠蔽性が良好な、カード又はパスポート用フィルムを提供できる。

✦ Generated by Eureka AI based on patent content.

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Abstract

This improves the concealment of inlets such as IC chips, and enhances printability on laser marking sheets. [Solution] A card or passport film having a thickness of 10 to 100 μm and a filler content of 10 to 50% by mass, comprising a polycarbonate resin (A) having a structural unit (A1) derived from a dihydroxy compound having a part represented by the following formula (1) in part of its structure, and a filler. [Formula 1] JPEG2026093842000008.jpg1547 However, this excludes cases where the part represented by formula (1) is part of -CH2-OH.
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Claims

1. A card or passport film having a thickness of 10 to 100 μm and a filler content of 10 to 50% by mass, comprising a polycarbonate resin (A) having a structural unit (A1) derived from a dihydroxy compound having a portion represented by the following formula (1) in part of its structure, and a filler. 【Chemistry 1】 However, the part represented by formula (1) above is -CH 2 Except when it is part of -O-H.

2. The card or passport film according to claim 1, wherein the rate of increase in opacity relative to the opacity of the following standard film is 10% or more. (Reference film) A film comprising a polycarbonate resin having the same thickness as the aforementioned card or passport film and a bisphenol skeleton, and a filler, wherein the filler and its content are equivalent to those of the aforementioned card or passport film.

3. The card or passport film according to claim 1, further containing an impact-resistant agent, wherein the content of the impact-resistant agent is 1% by mass or more and 30% by mass or less.

4. The material comprises an intermediate layer containing the polycarbonate resin (A) and the filler, and two surface layers provided on both sides of the intermediate layer. The card or passport film according to claim 3, wherein each of the two surface layers contains the polycarbonate resin (A), the filler, and the impact resistance improver.

5. The card or passport film according to claim 1, wherein the refractive index of the filler is 2 or more.

6. The card or passport film according to claim 1, wherein the filler contains titanium oxide.

7. A card or passport film according to claim 1, used as a core sheet.

8. A card or passport film according to claim 1, having an opening.

9. An inlet sheet comprising the card or passport film described in claim 1.

10. A card comprising a card or passport film according to any one of claims 1 to 8, or an inlet sheet according to claim 9.

11. A passport comprising a card or passport film according to any one of claims 1 to 8, or an inlet sheet according to claim 9.